Gigabyte GA-8IEX Series Technical Reference page 51

utility may be entered to manually change the boot sequence to boot from the backup BIOS.
2. During or after a BIOS upgrade, if DualBIOS detects that the main BIOS is corrupt, the
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backup BIOS will take over the boot-up process automatically. Moreover, it will verify the
main and backup BIOS checksums when booting-up. DualBIOS technology examines
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the checksum of the main and backup BIOS while the system is powered on to guarantee
your BIOS operates properly.
3. Power Users will have the advantage of having two BIOS versions on their mainboard.
The benefit is being able to select either version BIOS to suit the performance system needs.
4. Flexibility for high-end desktop PCs and workstation/servers. In the DualBIOS utility,
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the option can be set, " Halt On When BIOS Defects," to be enabled to halt your system with
awarning message that the main BIOS has been corrupted. Most workstation/servers
require constant operation to guarantee services have not been interrupted. In this situation,
the " Halt On When BIOS Defects" message may be disabled to avoid system pauses
during normal booting. Another advantage you gain from Giga-Byte' s DualBIOS
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technology is the ability to upgrade from dual 2 Mbit BIOS to dual 4
Mbit BIOS in the future if extra BIOS storage is need.
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Technical Reference